ECMAscript三（物件導向）

1、建立對象

        //混合工廠        var Car = function (name, color, id) {            var obj = new Object();            obj.name = name;            obj.color = color;            obj.id = id;            obj.showColor = function () {                alert(this.color);            }            return obj;        }        //混合建構函式原型        var Car = function (name, color, id) {            this._name = name;            this._color = color;            this._id = id;        }        Car.prototype.showColor = function () {            alert(this.color);        }        //動態原型        var Car = function (name, color, id) {            this._name = name;            this._color = color;            this._id = id;            if (typeof Car._initialized == "undefined") {                Car.prototype.showColor = function () { alert(this.color); }                Car._initialized = true;            }        }

業界中動態原型是主流，我們要在編寫代碼時對函數運行時變數在記憶體中的值有個清楚的認識，有構建可複用代碼的意識。